The year 1971 in architecture involved some significant architectural events and new buildings.
- January 9 – Courts of Justice building in Valletta, Malta, inaugurated.
- April – Hillbrow Tower in Johannesburg, South Africa.
- May – New Walker Art Center in Minneapolis, designed by Edward Larrabee Barnes.
- October 16 – Azadi Tower, originally Shahyad Tower, Tehran, Iran, designed by Hossein Amanat, inaugurated.
- Marsham Towers, three 20-storey tower blocks for the Department of the Environment atop a 5-storey linking building at Marsham Street in Westminster, London, designed by Eric Bedford (demolished 2002–03).
- Mausoleum of Mohammed V, Rabat, Morocco.
- Rothko Chapel in Houston, Texas, designed by Mark Rothko and Philip Johnson.
- Maupoleum in Amsterdam, designed by Piet Zanstra (demolished 1994).
- Danmarks Nationalbank headquarters, Copenhagen, designed by Arne Jacobsen with Hans Dissing and Otto Weitling.
- Meritus Mandarin Singapore Hotel Tower 1 in Singapore, designed by Stanley T. S. Leong.
- Carmel de la Paix in Mazille, Saône-et-Loire, France, designed by Josep Lluís Sert.
- Fred. Olsen Lines terminal, London Docklands, the first major design of Foster Associates.
- Summerland Leisure Complex in Douglas, Isle of Man (destroyed by fire 1973).
- Ukrainian Institute of Scientific Research and Development, Kiev, designed by L. Novikov and F. Yurijev.
- Redcar Library, England, designed by Ahrends, Burton and Koralek (demolished 2011).
- Anderton House, Rigg Side, Goodleigh, North Devon, England, designed by Peter Aldington and John Craig.
- Usdan Student Center, Brandeis University, designed by Hugh Stubbins